Glass and acrylic cost far more per square foot than plywood, and a bad layout is expensive. These materials also cut differently: you work in straight lines from one edge to the other, and mistakes cannot be hidden. Here is how to plan a glass or acrylic cut layout before you buy or cut.
Glass is scored and snapped, and acrylic is usually scored or sawn along a straight line. In both cases each cut runs the full width of the piece you are cutting. A layout that needs a cut to stop in the middle of a sheet cannot be made that way. This is called a guillotine cut layout: every cut splits the sheet into two smaller rectangles, and you repeat on each.
MeasureToCut's sheet calculator plans guillotine-style, straight through-cuts, so the layouts it shows can be cut the same way you would work with a scoring tool or a saw.
Tempered glass cannot be cut or drilled after tempering. If your project needs tempered panels, your cut list goes to the glass supplier, who cuts to size first. In that case an optimizer helps you estimate cost and compare sheet sizes, but the final cutting is the supplier's job.
You need these parts from 4x8 foot (48" x 96") acrylic sheets, cut with a 1/8" blade, with rotation allowed:
| Piece | Size | Qty |
|---|---|---|
| Shelf | 10" x 30" | 6 |
| Panel | 24" x 36" | 3 |
| Cover | 14" x 20" | 4 |
These parts total 5,512 square inches. One 4x8 sheet is 4,608 square inches, so you clearly need more than one sheet. The sheet calculator plans this on 2 sheets. The second sheet is only partly used, and what is left is a usable remnant that you can keep for a future project instead of counting it as waste. Whether that remnant is worth keeping depends on its size, and some suppliers can sell you a smaller sheet instead.
Check your supplier's options. A smaller second sheet, or a pre-cut size, can cost less than a second full sheet. Enter each sheet size you can buy and compare the layouts.
Try it: sheet cutting calculator opens with common acrylic stock sizes already filled in. Edit them to match what you actually buy.
List every finished piece, enter the sheet sizes you can buy, set the blade kerf, and run a sheet optimizer. Straight edge-to-edge cuts work best for scoring and sawing, so use a guillotine-style layout.
No. Tempered glass shatters if you cut or drill it after tempering, so it has to be cut to size first and then tempered by the supplier. Send them your final cut list.
Scoring and snapping removes almost no material, so the kerf is close to zero. Cutting acrylic with a saw removes material equal to the blade width, so enter your blade's actual width.
For clear material with no pattern, yes, since rotation lets the optimizer pack pieces more tightly. For patterned, frosted, or brushed material where direction shows, turn rotation off.
